Using javacc for QueryParser.jj

[Claude Libois]

Hello. I wanted to use the Highlighter from Maik Schreiber but i had a 
big problem:
In order to use it I need to change Lucene core . That's what I did but 
there is a file QueryParser.jj and I don't know how to compile it. I 
found that I have to use javacc but I don't know how. Can someone help 
me whih that?
CLaude